Bicycle-alarm.



T. G. HOLBROOK.

BICYCLE ALARM.

APPLIGATION FILED JAN. 18, 1912.

' Patented Oct. 15,1912.

INVENTOR 1720/7706 Cfl'aZn 0% M Wl lg;

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BICYCLE-ALARM.

Specification of Letters Patent.

Patented Oct. 15,1912.

Application fi1ed January 18, 1912. Serial No. 671,858.

To all whom it may concern:

Be it known that I, THOMAS C. HOL- BROOK, a citizen of the UnitedStates, residing at Brownsville, in the county of Haywood and State ofTennessee, have invented certain new and useful Improvements inBicycle-Alarms, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to alarms which are intended to be used uponbicycles and the like.

The invention comprises a casing in which there is mounted a diaphragmand operating mechanism to cause the diaphragm to vibrate. The operatingmechanism extending through the casing is provided with a roller whichcomes in contact with the tire of the wheel so that when the wheel turnsthe alarm will be caused to operate. The casing is pivotally mountedupon a bracket so that the roller may be brought into and out of contactwith the tire. The principal object of the same is to provide animproved type of bracket which will pivotally mount the casing andnormally hold the roller out of engagement with the tire.

This invention is illustrated in the ac companying drawings, wherein:Figure 1 is a side elevation showing the alarm mounted upon a wheel.Fig. 2 is a front elevation showing the alarm in place. Fig. 3 is aperspective view of the bracket. Fig. 4 is a sectional view through thebracket. Fig. 5 is a perspective view of the end portion of the bracket.

Referring to the accompanying drawings by numerals it will be seen thatthis invention comprises the bracket 10 which is preferably mounted nearthe bridge 11 of the forks 12. The bracket carries an arm 13, the outerend portion 14 of which is round so that it forms a pivotal bearing forthe alarm.

The alarm comprises the casing which is formed from forward and rearsections 15 and 16, the sections being provided with the flanges 17which are connected together by means of the screws or rivets 18. Therear section carries a sleeve 19 which fits upon the bracket, and isheld in place by means of the pin 20. It will thus be seen that thealarm will be rotatably mounted upon the outer end portion 14 of thebracket. A shaft 21 passes through the bearing 22, and

is rotatably mounted in the rear portion of the casing. A roller 24 isrigidly mounted upon the outer end portion of the shaft 21 and ispositioned so that when the alarm is rocked upon its bearing the rollerwill be brought into contact with the tire 25, and the shaft caused torotate rapidly.

An axle 26 has its ends mounted in the bearings 28 formed in oppositesides of the flange formed upon the rear section, and is held in placeby the flange of the front section which is also provided with bearings29 in which the ends of the axle lit. The shaft 21 is provided with aworm screw 30 which rotates the axle 26 when the shaft 24 is rotated bythe tire. A toothed wheel 32 is mounted upon the axle 26 to one side ofthe gear wheel 31, and operates the diaphragm so that when the alarm isin operation the diaphragm will be caused to vibrate.

The forward section 15 is provided with a mouthpiece 33 and with aninwardly extending flange 34. The diaphragm 35, which is formed fromresilient material, fits upon the flange 34 and carries a tooth 36 whichis engaged by the toothed wheel 32. The tooth 36, and the teeth of thewheel 32 are pitched at such an angle that the teeth of the wheel 32will engage the tooth 36 to vibrate the diaphargm as the wheel 32 isrotated, without the teeth locking so that the wheel would be preventedfrom rotating. A securing ring 37 fits upon the diaphragm 35 and screws38 pass through the ring, diaphragm and flange so that diaphragm will beheld securely in place. Packing rings 39 are placed to each side of thediaphragm between the diaphragm and the flange and ring 37 so that thediaphragm will be securely held and prevented from slipping.

The end portion 40 of the arm 13 is provided with a socket 41 which ispositioned in alinement with the socket 42 formed in the sleeve 19 whenthe sleeve is mounted upon the bracket. A spring 43 has its ends mountedin the sockets 41 and 42 so that the shaft 21 will normally be heldvertical with the roller 24 out of engagement with the tire 25. Anelastic abutment cushion 44 is mounted in the lower portion of thesleeve 19 so that when the alarm is returned to its normal position bythe spring 43, the cushion will act as an abutment to limit the movementof the alarm in one direction. lhe alarm is rocked by any suitabledevice such as a cord. 7

When the alarm is rocked so that the roller 24 comes in contact with thetire, the shaft 21 is rotated and by the worm screw 80 rotates the axle26 and tooth wheel 32. As the tooth wheel 32 rotates its teeth engagethe tooth 36 and causes the diaphragm to be vibrated thus giving forth aloud noise.

What is claimed is I. In a device of the character described, acontainer, a sleeve carried by said container and provided with areduced opening in one end and with a socket in its side wall, a brackethaving its end portion positioned in said sleeve and provided with areduced end passing through the opening in the end of said sleevewhereby said container will be pivotally mounted upon said bracket,

said bracket being provided with a socket formed in alinement with thesocket of said sleeve, and a spring having its ends mounted in thesockets of said sleeve and bracket.

2. In a device of the character described comprising a container, asleeve carried by' In testimony whereof I hereunto afiix my 1 signaturein presenceof two Witnesses.

THOMAS C. HOLBROOK.

Witnesses:

IV. l/V. KLYoE, H. M. DIXON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

